@article{Hägerstrand2004,
author = {Hägerstrand, T.},
title= {The two vistas},
year = {2004},
doi = {10.1111/j.0435-3684.2004.00170.x},
journal = {Geografiska Annaler},
volume = {86},
number = {B-4},
pages = {315‒323},
}